Dslash-like Linear Operator. More...

#include <linearop.h>

Inheritance diagram for Chroma::DslashLinearOperator< T, P, Q >:

Public Member Functions
virtual	~DslashLinearOperator ()
	Virtual destructor to help in cleanup. More...

virtual const FermBC< T, P, Q > &	getFermBC () const =0
	Return the fermion BC object for this linear operator. More...

virtual void	operator() (T &d, const T &psi, enum PlusMinus isign) const
	Apply operator on both checkerboards (entire lattice) More...

virtual void	apply (T &chi, const T &psi, enum PlusMinus isign, int cb) const =0
	Apply checkerboarded linear operator. More...

virtual void	deriv (P &ds_u, const T &chi, const T &psi, enum PlusMinus isign) const
	Take deriv of D. More...

virtual void	deriv (P &ds_u, const T &chi, const T &psi, enum PlusMinus isign, int cb) const
	Take deriv of D. More...

virtual void	derivMultipole (P &ds_u, const multi1d< T > &chi, const multi1d< T > &psi, enum PlusMinus isign) const
	Return the force for multiple poles. More...

virtual void	derivMultipole (P &ds_u, const multi1d< T > &chi, const multi1d< T > &psi, enum PlusMinus isign, int cb) const

Public Member Functions inherited from Chroma::DiffLinearOperator< T, P, Q >
virtual	~DiffLinearOperator ()
	Virtual destructor to help with cleanup;. More...

virtual void	deriv (P &ds_u, const T &chi, const T &psi, enum PlusMinus isign, const Real &epsilon) const
	Apply the derivative of the operator onto a source std::vector to some precision. More...

Public Member Functions inherited from Chroma::LinearOperator< T >
virtual	~LinearOperator ()
	Virtual destructor to help with cleanup;. More...

virtual void	operator() (T &chi, const T &psi, enum PlusMinus isign, Real epsilon) const
	Apply the operator onto a source std::vector to some precision. More...

virtual const Subset &	subset () const =0
	Return the subset on which the operator acts. More...

virtual unsigned long	nFlops () const

Detailed Description

template<typename T, typename P, typename Q>
class Chroma::DslashLinearOperator< T, P, Q >

Dslash-like Linear Operator.

These are concessions/optimizations for red-black checkboarding

Definition at line 220 of file linearop.h.

Constructor & Destructor Documentation

◆ ~DslashLinearOperator()

template<typename T , typename P , typename Q >

virtual Chroma::DslashLinearOperator< T, P, Q >::~DslashLinearOperator ( )

inlinevirtual

Virtual destructor to help in cleanup.

Definition at line 224 of file linearop.h.

Member Function Documentation

◆ apply()

template<typename T , typename P , typename Q >

virtual void Chroma::DslashLinearOperator< T, P, Q >::apply	(	T &	chi,
		const T &	psi,
		enum PlusMinus	isign,
		int	cb
	)		const

pure virtual

Apply checkerboarded linear operator.

To avoid confusion (especially of the compilers!), call the checkerboarded apply instead of operator()

Implemented in Chroma::QDPWilsonDslashT< T, P, Q >, Chroma::QDPWilsonDslashOptT< T, P, Q >, Chroma::LLVMWilsonDslashT< T, P, Q >, Chroma::QDPCloverTermT< T, U >, Chroma::PTXCloverTermT< T, U >, Chroma::NVVMCloverTermT< T, U >, Chroma::LLVMCloverTermT< T, U >, Chroma::QDPStaggeredDslash, Chroma::SSEWilsonDslash, Chroma::PABWilsonDslash, and Chroma::BAGELCloverTerm.

◆ deriv() [1/2]

template<typename T , typename P , typename Q >

virtual void Chroma::DslashLinearOperator< T, P, Q >::deriv	(	P &	ds_u,
		const T &	chi,
		const T &	psi,
		enum PlusMinus	isign
	)		const

inlinevirtual

Take deriv of D.

Parameters

chi	left std::vector (Read)
psi	right std::vector (Read)
isign	D'^dag or D' ( MINUS \| PLUS ) resp. (Read)

Returns: Computes $chi^\dag * \dot(D} * psi$

Reimplemented from Chroma::DiffLinearOperator< T, P, Q >.

Reimplemented in Chroma::WilsonDslashBase< T, P, Q >, Chroma::CloverTermBase< T, U >, Chroma::WilsonDslashBase< LatticeFermionF, multi1d< LatticeColorMatrixF >, multi1d< LatticeColorMatrixF > >, Chroma::WilsonDslashBase< LatticeFermionD, multi1d< LatticeColorMatrixD >, multi1d< LatticeColorMatrixD > >, and Chroma::WilsonDslashBase< LatticeFermion, multi1d< LatticeColorMatrix >, multi1d< LatticeColorMatrix > >.

Definition at line 252 of file linearop.h.

◆ deriv() [2/2]

template<typename T , typename P , typename Q >

virtual void Chroma::DslashLinearOperator< T, P, Q >::deriv	(	P &	ds_u,
		const T &	chi,
		const T &	psi,
		enum PlusMinus	isign,
		int	cb
	)		const

inlinevirtual

Take deriv of D.

Parameters

chi	left std::vector on cb (Read)
psi	right std::vector on 1-cb (Read)
isign	D'^dag or D' ( MINUS \| PLUS ) resp. (Read)
cb	Checkerboard of chi std::vector (Read)

Returns: Computes $chi^\dag * \dot(D} * psi$

Reimplemented in Chroma::WilsonDslashBase< T, P, Q >, Chroma::CloverTermBase< T, U >, Chroma::WilsonDslashBase< LatticeFermionF, multi1d< LatticeColorMatrixF >, multi1d< LatticeColorMatrixF > >, Chroma::WilsonDslashBase< LatticeFermionD, multi1d< LatticeColorMatrixD >, multi1d< LatticeColorMatrixD > >, and Chroma::WilsonDslashBase< LatticeFermion, multi1d< LatticeColorMatrix >, multi1d< LatticeColorMatrix > >.

Definition at line 268 of file linearop.h.

◆ derivMultipole() [1/2]

template<typename T , typename P , typename Q >

virtual void Chroma::DslashLinearOperator< T, P, Q >::derivMultipole	(	P &	ds_u,
		const multi1d< T > &	chi,
		const multi1d< T > &	psi,
		enum PlusMinus	isign
	)		const

inlinevirtual

Return the force for multiple poles.

Reimplemented from Chroma::DiffLinearOperator< T, P, Q >.

Reimplemented in Chroma::CloverTermBase< T, U >.

Definition at line 275 of file linearop.h.

References chi, deriv(), i, Chroma::isign, Nd, psi, and Chroma::zero.

◆ derivMultipole() [2/2]

template<typename T , typename P , typename Q >

virtual void Chroma::DslashLinearOperator< T, P, Q >::derivMultipole	(	P &	ds_u,
		const multi1d< T > &	chi,
		const multi1d< T > &	psi,
		enum PlusMinus	isign,
		int	cb
	)		const